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Approximation of boundary element matrices

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This article considers the problem of approximating a general asymptotically smooth function in two variables, typically arising in integral formulations of boundary value problems, by a sum of products of two functions in one variable. From these results an iterative algorithm for the low-rank approximation of blocks of large unstructured matrices generated by asymptotically smooth functions is developed. This algorithm uses only few entries from the original block and since it has a natural stopping criterion the approximative rank is not needed in advance.

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Received June 21, 1999 / Revised version received December 6, 1999 / Published online June 8, 2000

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Bebendorf, M. Approximation of boundary element matrices. Numer. Math. 86, 565–589 (2000). https://doi.org/10.1007/PL00005410

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  • DOI: https://doi.org/10.1007/PL00005410

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